WS-Discovery Q & A

Q: Why does WS-Discovery allow a Target Service to send a Hello without any transport address(es)?
 
A: To give the Target Service fine-grained control over what it publishes, to support (very) late binding, to support other address-resolution mechanisms, and to minimize packet size.
 
Q: If a network includes a Discovery Proxy and if a Target Service chooses not to include transport address(es), how does the Discovery Proxy get the transport address(es) to hand out to Clients?
 
A: A Discovery Proxy could send a multicast Resolve to the Target Service. Of course, there may also be Discovery-Proxy specific means to determine Target Service transport address(es).

Posted Jul 20 2005, 09:19 PM by jeffrey-schlimmer

Comments

Alejandro wrote re: WS-Discovery Q & A
on 12-17-2007 11:37 AM
Is there any real implementation done¿
Jeffrey Schlimmer wrote re: WS-Discovery Q & A
on 12-17-2007 2:48 PM
WS-Discovery is implemented in Windows Vista and elsewhere. See

http://www.microsoft.com/whdc/rally/rallypnpx.mspx

http://www.microsoft.com/whdc/rally/rallywsd.mspx

http://msdn2.microsoft.com/en-us/webservices/aa740636.aspx

http://msdn2.microsoft.com/en-us/webservices/aa740615.aspx

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